/*

 * Copyright (C) 2021 Huawei Device Co., Ltd.

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */
package com.chinalwb.are.utils;

import ohos.agp.components.AttrHelper;
import ohos.agp.window.service.Display;
import ohos.agp.window.service.DisplayManager;
import ohos.app.Context;

import java.text.DecimalFormat;

/**
 * 工具类
 *
 * @author zh
 * @since 2021/06/22
 */
public class PxUtil {
    private static Display display;

    /**
     * init
     *
     * @param context context
     */
    public static void initContext(Context context) {
        display = DisplayManager.getInstance().getDefaultDisplay(context).get();
    }

    /**
     * screenWidth
     *
     * @return int
     */
    public static int screenWidth() {
        return display.getAttributes().width;
    }

    /**
     * screenHeight
     *
     * @return int
     */
    public static int screenHeight() {
        return display.getAttributes().height;
    }

    /**
     * fp2px
     *
     * @param fp fp
     * @param context context
     * @return float float
     */
    public static float fp2px(int fp , Context context) {
        return AttrHelper.fp2px(fp, context);
    }

    /**
     * vp2px
     *
     * @param vp vp
     * @param context context
     * @return float float
     */
    public static float vp2px(int vp, Context context) {
        return AttrHelper.vp2px(vp, context);
    }


    /**
     * 格式化数字(保留一位小数)
     *
     * @param num 数字
     * @return 格式化数字(保留一位小数)
     */
    public static String formatNum(int num) {
        DecimalFormat format = new DecimalFormat("0.0");
        return format.format(num);
    }

    /**
     * 格式化数字(保留两位小数)
     *
     * @param num 数字
     * @return 格式化数字(保留两位小数)
     */
    public static String formatNum(float num) {
        if (((int) num * 1000) == (int) (num * 1000)) {
            // 如果是一个整数
            return String.valueOf((int) num);
        }
        DecimalFormat format = new DecimalFormat("0.00");
        return format.format(num);
    }
}
